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Polonium 210 Is has been known to be a light silver Melting point: 527.2 K Boiling point: 1235 K Density ; 293 K: 9.4 g/cm.

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Presentation on theme: "Polonium 210 Is has been known to be a light silver Melting point: 527.2 K Boiling point: 1235 K Density ; 293 K: 9.4 g/cm."— Presentation transcript:

1

2 Polonium 210

3 Is has been known to be a light silver Melting point: K Boiling point: 1235 K Density ; 293 K: 9.4 g/cm 3

4 Crystalline Structure –simple cubic or primitive.

5 SYMBOL-PO ISOTOPES: 29  Atomic number- 84  Atomic weight- 209 Number of protons/electrons- 84 Number of neutrons- 125

6  Group-Metalloids  block- p-block  electron configuration- [Xe] 4f14 5d10 6s2 6p4  Period-6

7  Polonium has attracted the attention to be used as a light weight heating source. IIt is used on brushes to remove dust from photographs.

8 AAlso used as a trigger for nuclear weapons. IIt can be used in machinery in textile mills to remove static charges. PPolonium can be alloyed or mixed Beryllium to provide a source of neutrons.

9  Polonium is rarely found in nature and has been described as scarce and excessively rare. IIt is made in very small quantities through a nuclear reaction of bismuth. Neutron irradiation of 209 bismuth (atomic number 83) gives 210 polonium (atomic number 84). It is found in uranium ores, but none extract it form these ores.

10  Polonium dissolves in concentrated hydrochloric acid, HCl, sulphuric acid, H 2 SO 4, or concentrated nitric acid, HNO 3, initially to form solutions containing Po(II).  Oxidation states: +2, +4  Polonium reacts under controlled conditions with the halogens chlorine, Cl 2, bromine, Br 2, and iodine, I 2, to form the respective tetra halides polonium(IV) chloride, polonium(IV) bromide, and polonium(IV) iodide.

11  Polonium has more isotopes than any other element, all of which are radioactive.  Polonium dissolves readily in dilute acids, but is only slightly soluble in alkalis.  watch?v=WXoYmnx0K5I watch?v=WXoYmnx0K5I  watch?v=bbr5yWwsI1o watch?v=bbr5yWwsI1o


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